Ok, suppose a boa realized halfway through that the rat she was trying to eat was a bit too large? WOuld she stubbornly try to continue with it, or regurgitate the rest and give up? Now, if she manages to finish the rat, is there any physical damage that could be done internally by a larger rat? My pet store has stopped selling small rats, and their mediums tend to be more on the large side....so I'm wondering if this could present a problem.